NATURE's takes you into the depths of the ocean to discover the secrets of INCREDIBLE SUCKERS.

The most remarkable life still undiscovered on our planet will certainly be found in the sea. As new machines explore this inner universe and penetrate depths beyond our reach, we are finding creatures -- such as cephalopods -- that defy our imagination.

Cephalopods are a group of animals that includes the octopus, squid, and cuttlefish. Basically, celphalopods are "sophisticated snails." But these flamboyant animals have developed huge brains, superb vision, and probably their most obvious feature -- sucker disks.

NATURE brings you face-to-face with these denizens of the deep -- from cuttlefish to the "vampire squid from hell" in INCREDIBLE SUCKERS.